Your personal data — including conversation content — is transferred to and processed in the United States, which has different (and generally lower) privacy protections than the EU or UK.
OpenAI collects extensive personal data including conversation content, audio and image inputs, device identifiers, location data, and usage logs across all its services, and may use this data to train AI models unless users opt out. This creates a meaningful privacy risk because sensitive information shared in conversations — health queries, financial details, personal communications — could indirectly influence model outputs. You can opt out of conversation data being used for AI training by navigating to Settings > Data Controls in your ChatGPT account and disabling 'Improve the model for everyone'.